Portage, IN to Saint John, IN is 309.8 miles and takes about 5h 50m via I 69, Casimir Pulaski Memorial Highway, and I 465, with a fuel budget near $48 and enough daylight to finish in a day. This trip stays within the Midwest region, primarily traversing Indiana. Expect a mix of interstate cruising and surface road driving, making it a manageable one-day excursion. With just one recommended stop, the focus is on efficient travel between these two Indiana points.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
154.9 miles from Portage, IN
A natural place for your longest stop of the day
, about 2h 54m into the drive
.
Main Roads
Road
Distance
Duration
I 69
146.5 mi
2h 39m
Casimir Pulaski Memorial Highway
130 mi
2h 21m
I 465
13.7 mi
15m
I 65
5.9 mi
6m
I 80
3.7 mi
5m
Indiana Toll Road
2.6 mi
3m
New Harmony Road
1.4 mi
3m
St John Road
1.1 mi
4m
Longest stretch:
I 69
— 146.5 mi, about 2h 39m
Traffic on I-65
Hour-of-day weekday pattern from 48 FHWA count stations on your route.
Peak
4 PM
~1,864 veh/hr typical
· worst 2,433
Quietest
2 AM
~258 veh/hr
Peak-to-quiet ratio
7.2×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Portage, IN and Saint John, IN.
1
Start on Central Avenue
0.4 mi·53 sec·Central Avenue
2
Turn right onto Willowcreek Road
0.6 mi·1 min·Willowcreek Road
Use the right lane.
3
Take the ramp
434 ft·11 sec
Toward I 80, I 90
4
Keep slight right at fork
0.1 mi·16 sec
5
Continue on this road
0.4 mi·47 sec·this road
6
Merge onto I 80; I 90
2.6 mi·3 min·Indiana Toll Road
Use the straight / slight right lanes.
7
Take the exit onto I 80
0.6 mi·1 min·I 80
Exit 21Toward I 80 West, I 94, US 6: Des MoinesUse the straight / slight right lanes.
8
Keep slight right at fork onto I 80
0.1 mi·13 sec·I 80
Toward I 94 West, I 80 West, SR 51, US 6 EastUse the straight / slight right lanes.
9
Keep slight left at fork onto I 80
2.9 mi·4 min·I 80
Toward I 94 West, I 80 WestUse the straight / slight right lanes.
10
Take the exit
0.6 mi·51 sec
Exit 12Toward I 65: Gary, Toll Road, IndianapolisUse the slight right lane.
11
Keep slight left at fork
0.1 mi·9 sec
Toward I 65 South, I 80 West, I 94 West, US 6 West: Indianapolis, Chicago
12
Keep slight left at fork
0.5 mi·59 sec
Toward I 65 South: IndianapolisUse the slight left lane.
13
Merge onto I 65
130 mi·2 hr 21 min·Casimir Pulaski Memorial Highway
Use the straight / slight right lanes.
14
Keep slight left at fork onto I 65
5.9 mi·6 min·I 65
Use the straight / slight right lanes.
15
Take the exit
0.2 mi·29 sec
Exit 123Toward I 465 South
16
Continue on this road
0.6 mi·1 min·this road
Exit 123Toward I 465 South
17
Merge onto I 465
14 mi·15 min·I 465
18
Take the exit
0.8 mi·1 min
Exit 5Toward I 69 South: EvansvilleUse the straight / slight right lanes.
19
Continue on I 69
47 mi·53 min·I 69
Use the straight lane.
20
Keep slight left at fork onto I 69
99 mi·1 hr 46 min·I 69
Toward I 69 South: Evansville
21
Take the exit
0.3 mi·43 sec
Exit 15Toward Boonville-New Harmony Road
22
Turn left onto East Boonville New Harmony Road
0.3 mi·42 sec·East Boonville New Harmony Road
23
Continue on New Harmony Road
1.4 mi·3 min·New Harmony Road
24
Turn right onto St John Road
1.1 mi·4 min·St John Road
25
Arrive at destination
St John Road
Trip Plan
Given the 5h 50m estimated drive time, departing in the morning is recommended to allow for flexibility. The route includes only one suggested stop, so you can choose to make it a quick break or extend it slightly if needed. Keep an eye on your fuel gauge, especially during the 146.5-mile stretch on I 69, as services might be less frequent. The $48 fuel cost estimate is helpful for budgeting, but it's always wise to factor in a buffer.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 154.9 miles from Portage, IN, or about 2h 54m into the drive.
The longest continuous stretch on this route runs about 146.5 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 68 miles or 1h 18m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 154.9 miles or 2h 54m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 44m
Traffic, exits, and arrival timing usually matter more near Saint John, IN than in the middle of the route.
Before You Leave
+
Open the route before leaving Portage, IN so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Portage, IN
This is one driving day of about 309.8 miles and 5h 50m.
Your first comfortable stop window is around 68 miles from Portage, IN.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on I 69 for about 146.5 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 19
5 decision points cluster between mile 4 and 8.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
4 mi into trip|~6m in|I 80
Take the exit onto I 80 toward I 80 West, I 94, US 6: Des Moines
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 21
Toward I 80 West, I 94, US 6: Des Moines
8
4.6 mi into trip|~7m in|I 80
Keep slight right at fork onto I 80 toward I 94 West, I 80 West, SR 51, US 6 East
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 94 West, I 80 West, SR 51, US 6 East
8
4.7 mi into trip|~7m in|I 80
Keep slight left at fork onto I 80 toward I 94 West, I 80 West
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 94 West, I 80 West
8
7.7 mi into trip|~12m in
Take the exit toward I 65: Gary, Toll Road, Indianapolis
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 12
Toward I 65: Gary, Toll Road, Indianapolis
7
8.4 mi into trip|~13m in
Keep slight left at fork toward I 65 South: Indianapolis
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward I 65 South: Indianapolis
Fuel & Cost
Regular Gas
$45.75 one way
$91.50 round trip
$3.75/gal25.4 MPG avg108 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.14
$50.51
$101.01
premium
$4.72
$57.52
$115.04
diesel
$4.80
$58.50
$116.99
Estimated Tolls: $0.18
Indiana Toll Road
(2.6 mi)$0.18
Toll estimates based on average 2024-2025 rates. EZ-Pass/SunPass discounts may lower the actual cost.
Estimated Trip Cost (one way, 1 person)
Fuel
$46
Tolls
$0
Meals
$25–$50
Total
$71–$96
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 108.4 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $33 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
92.9
1
$32.53
$14.87
Efficient EV
77.5
0
$27.11
$12.39
EV Truck/SUV
123.9
1
$43.37
$19.83
Gas CO2
108 kg
EV CO2
36 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Jul 17, 2026
Origin
Portage, IN
Afternoon
in Portage on Saturday
Local time
1:52 PM
CDT
Current temp
87°F
Patchy Smoke
SW 10 mph56% chanceLive forecast
Special Weather Statement
Special Weather Statement issued July 17 at 1:50PM CDT by NWS Northern Indiana
Special Weather Statement
Special Weather Statement issued July 17 at 10:04AM EDT by NWS Northern Indiana
Destination
Saint John, IN
Afternoon
in Saint John on Saturday
Local time
1:52 PM
CDT
Current temp
88°F
Showers And Thunderstorms Likely
W 7 mph62% chanceLive forecast
Special Weather Statement
Special Weather Statement issued July 17 at 1:50PM CDT by NWS Northern Indiana
Special Weather Statement
Special Weather Statement issued July 17 at 10:04AM EDT by NWS Northern Indiana
61°F
Clermont, IN
155 mi in
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
1 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
5h 50m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Indiana Dunes National Park
National Park
Lake Michigan's might has influenced Indiana Dunes for millennia. Wind and waves have shaped the land, leaving a rich mosaic of habitats along these 15 miles of Indiana coast. Over 50 miles of trails...
6 mi from route
~15 min detour
$20
Park Closure: Partial Closures to Marquette Greenway Trail and Glenwood Dunes Trail
The British flag would not be raised above Fort Sackville Feb. 25, 1779. At 10 A.M., the garrison surrendered to American Colonel George Rogers Clark. His American army, aided by French residents of t...
20 mi from route
~49 min detour
Free
near mile 267
Abraham Lincoln grew from youth to manhood on this southern Indiana soil. Many character and moral traits of one of the world's most respected leaders was formed and nurtured here. Explore Lincoln's b...
25 mi from route
~62 min detour
Free
near mile 309.8
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route features a 55% highway share, with the longest continuous stretch covering 146.5 miles on I 69. You'll experience a mixed highway and surface road profile, meaning you'll transition from faster interstate speeds to more moderate travel on local roads. Be prepared for a significant amount of surface road driving after the main highway segments conclude.
55% highway, the rest on surface roads — varied driving throughout.
25 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 146.5 mi on I 69.
How Hard Is This Drive?
9/10
This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 4 miles in near I 80.
Driving Effort9/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 19 significant decision points across 309.8 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 4 miles (I 80): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 4.6 miles (I 80): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 4.7 miles (I 80): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Doable as a same-day drive at 5h 50m. Total distance: 309.8 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
5h 50m drive, comfortable solo distance.
Scenic Drive
Mixed highway & surface route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 146.5 miles on I 69. The full list of main roads is in the Roads section above.
Expect about $0.18 in tolls one way, starting with Indiana Toll Road. Most Northeast and Midwest toll agencies accept E-ZPass; in the West and Texas, transponders like TxTag or FasTrak apply. If you do not have a transponder, cashless tolling plates will mail a bill to the vehicle's registered address — usually with a surcharge, so a rental-car toll pass is often cheaper than paying by mail.
Yes — we found about 33 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Saint John, IN before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. There are 33 rest areas along the route for bathroom stops.
The main spots that need attention: at 4 miles (I 80): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 4.6 miles (I 80): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 4.7 miles (I 80): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Indiana Dunes National Park, George Rogers Clark National Historical Park and Lincoln Boyhood National Memorial. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 5.8 hours each way, a round trip means 11.7 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Saint John, IN before the return drive.
